feat(ip): Complete route save/showdump

Author: yedayak

completions/ip

@@ -248,7 +248,7 @@ _comp_cmd_ip()
 
         r | route)
             case $subcmd in
-                list | flush)
+                list | flush | save)
                     if [[ $prev == proto ]]; then
                         _comp_cmd_ip__iproute2_etc rt_protos
                     else
@@ -283,7 +283,7 @@ _comp_cmd_ip()
                 *)
                     ((cword == subcword)) &&
                         _comp_compgen -- -W 'help list flush get add del change
-                            append replace'
+                            append replace save showdump'
                     ;;
             esac
             ;;